Shutter-lock



F. KRUPP.

No. 554,701. Patented Feb. 18, 1896.

NITED STATES FRANK KRUPP, OF NEWV ORLEANS, LOUISIANA.

SHUTTER-LOCK.

SPECIFICATION forming part of Letters Patent No. 554,701, dated February18, 1896.

Application filed December 5, 1895. Serial No. 571,146. (No model.)

To all whom it may concern: I

Be it known that I, FRANK KRUPP, a citizen of the United States,residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented certain new and useful Improvements in Blindand Shutter Locks; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to looks for blinds or shutters and slidingwindow-sashes, and it is designed more particularly as an improvementupon the lock disclosed in my application filed June 3, 1895, andserially numbered 551,546.

The general object of my present invention is to provide, in conjunctionwith a keeperplate having an elongated opening and adapted to beconnected to a shutter or to a window-casing, a slidable and rotatablelockingbolt adapted to be arranged in a sill-frame or in a sash andhaving a head adapted to pass through the hole in the keeper-plate andwhen turned to engage said keeper-plate, a simple and compact deviceadapted to hold the bolt in such position that its head will passthrough the opening in the keeper and plate, and a device adapted when ashutter or a sash is to be locked to move the bolt forward and turn itsoas to secure its head on the inside of the keeper-plate, and when theshutter or the sash is to be unlocked to first turn the bolt and thenmove it endwise, so as to withdraw its head through the opening in thekeeperplate.

With the foregoing end in view the invention will be fully understoodfrom the following description and claims, when taken in connection withthe annexed drawings, in which Figure 1 is a vertical sectionillustrating a portion of a window-casing and a shutter or blindequipped with my improvements with the locking-bolt in the position itis caused to assume to lock the blind or shutter in its closed position.Fig. 2 is a horizontal section taken in the plane indicated by the line00 a: of Fig. 1. Fig. 3 comprises disconnected perspective views of thelocking-bolt and the eccentric cam-gear for moving said boltlongitudinally and partially rotating the same. Fig. 4 is a detailperspective view of the illner guide for the locking-bolt, which servesto hold the bolt against turning during its endwise movements. Fig. 5comprises disconnected perspective views of the parts which form theouterv guide for the lockingbolt and also form a stop for limiting itsinward movement, and Fig. 6 is a vertical section illustrating themanner in which my improvements are applied to look a sash.

Referring by letter to said drawings, and more particularly to Figs. 1to 5 thereof, A indicates a window-sill.

B indicates a shutter or blind which may be suitably adapted to hold itsfellow shutter when the shutters or blinds are closed, so that saidfellow shutter cannot be opened until said shutter B is opened.

- 0 indicates a recess which is formed in the inner side of the shutterB.

D indicates a countersunk plate which is secured by screws or the likein the shutter B over the recess 0, and is provided with an elongatedslot E, for a purpose presently described.

F indicates a groove or way which is formed in the sill A, and extendsto the outer edge of said sill, as shown, and G indicates a pocket orrecess which is formed in the sill at the inner end of the way F, asshown. The way or groove F has its outer end closed by the casting 61,having the vertical slot Z), and also having the upper and lowerextensions 0 and the casting d, which is countersunk in the outer edgeof the sill A and secured thereto, and is provided with an elongatedslot 6, which extends at right angles to that of the casting a, and isalso provided with recesses f to receive the extensions 0 of the castinga, as shown.

H indicates the locking-bolt of my improved lock, which is provided atits outer end with a T-head g, which is preferably beveled, as shown,-soas to facilitate its passage through the slot E of the keeper-plate D.The slot e of the casting b is disposed at right angles to the slot 6 ofthe casting d, as shown, in order to limit the movement of thelocking-bolt in the direction of the arrow in Fig. 1, and a guidecasting1, having a depending portion t, is provided adjacent to the recess G,which guide supports the bolt in its sliding movements and enables it toslide freely and at the same time holds the bolt against turning duringits sliding movements, as will be presently described. The locking-boltII is generally of a circular form in cross-section but it is providedat an intermediate point of its length with a portion 1, which is ofrectangular form in cross-section, and is designed to move in thedepending portiont of guide i, so as to prevent the bolt from turningduring its sliding movements, and is also preferably inclined, as shown,so as to enable the bolt to slide more freely when it is drawn out ofengagement with the keeper-plate 1').

\Vithin the recess or pocket G the bolt II is provided with a segmentalgear J having three (more or less) teeth, as shown, and at its inner endsaid bolt is provided with an angular projection K. The said gear J andprojection K are designed for the engagement of the eccentric cam-gearM.(Better illustrated in Fig. This eccentric cam-gear has teeth j upon itsperiphery designed to engage the teeth of the gear J, and it is arrangedbetween said gear and the projection K, and is carried by a stem 7twhich is journaled in the bottom of a casting N secured upon the sill A,and is provided at its upper end an d within said casting N with athumb-piece P.

Q indicates a swinging cover which is pivotally mounted on the castingN, and is designed to be swung over the said casting to exclude dustfrom the same, and is also adapted to be swung oft of the casting whenit is desired to manipulate the lock-bolt through the medium of thethumb-piece P.

The locking-bolt II is shown in Figs. 1 and 2 with its head secured inthe recess 0 and the teeth of the eccentric cam-gear M engaging its gearJ. Now when the eccentric camgear is turned in the direction asindicated by arrow in Fig. 2 it will turn the lockingbolt so as to bringthe head 9 into alignment with slot E in plate D, and its cam portionacting against the projection K will move the locking-bolt in thedirection indicated by an row until its head 9 rests in the slot 6 ofthe casting d. \Vhen the shutters are closed and it is desired to lockthe same, the eccentric cam-gear is turned in a direction opposite tothat indicated by arrow in Fig. 2, when its cam portion acting againstthe side of the gear J will move the bolt in the direction opposite tothat indicated until the bolt-head g rests within the shutter-recess 0,when the teeth on the gear will engage the teeth of gear J, and willturn the bolt so as to carry the bolt-head to a position at right anglesto the slot in plate D and secure it in the recess C.

During the sliding movement of the bolt H in both directions it will beobserved that its angular portion I will rest in the depending portion25 of the guide '5, and will effectually prevent turning of the bolt. Inconsequence of this it will be appreciated that the head g will passfreely through the slot E inplate D in both directions.

In Fig. 6 of the drawings I have illustrated a slightly-modified form ofmy invention applied so as to enable it to lock awindow-sash in itsclosed position. I11 this construction a plate D similar to the plate I)before described, is secured over a recess 0 in the window-sill A, andthe castings a (Z, which are similar to those before described, and theguide 1:, which is also similar to that before described, are arrangedin the window-sash F, said parts, however, being disposed to suit thelocking-bolt II, which is vertical or approximately vertical, and isprovided with the portion 1 of rectangular form in cross-section,designed to engage the guide 1', the gearsegment J, and the angularprojection K. A recess G is also provided in the sash T for thereception of the gear-segment J and K. In this recess is also arrangedthe eccentric camgear M, which is carried by a stem k, which isjournaled in a plate N, and has a thumb-piece P at its outer end and isdesigned to be turned in the same manner to move the bolt H that theeccentric cam-gear M is turned to move the bolt II.

It will be appreciated from the foregoing that my improved lock is verysimple and cheap and is equally applicable for locking shutters orwindow-sashes. \Vhen my improvements are employed for the former purposeit will be observed that the shutters can only be uni'astened by aperson 011 the inside of the window and cannot be opened by cutting awaya slat and reaching in the hand as can be other shuttcr-fasteningsusually employed.

Having described my invention, what I claim is- 1. A lock for shuttersand window-sashes comprising a keeper adapted to be secured to a shutteror window-casing and having an elongated slot, a locking-bolt adapted tobe arranged in suitable guides on a window-sill or on a Window-sash andhaving a T-head at one end and also having a gear-segment at anintermediate point of its length and a projection at its opposite end,and an eccentric camgear arranged between the gear-segment and the projection on the locking-bolt and having teeth adapted to engage the gearof the locking-bolt and also having a stem journaled in a suitablebearing and a thumb-piece on said stem, substantially as and for thepurpose set forth.

2. A lock for shutters and window-sashes comprising a keeper adapted tobe secured to a shutter or window-casing and having an elongated slot, alocking-bolt adapted to be arranged in suitable guides on a window-sillor on a window-sash and having a T-hcad at one end, a gear-segment at anintermediate point of its length and a projection at its opposite endand also having an intermediate portion of angular form incross-section, a guide receiving said angular portion of the bolt so asto prevent the bolt from turning during its endwise movements and aneccentric camgear arranged between the gear-segment and the projectionon the locking-bolt and having teeth adapted to engage the gear of thelocking-bolt and also having a stem journaled in a suitable bearing anda thumb-piece on said stem, substantially as specified.

3. A look for shutters, window-sashes and the like, comprising a keeperhaving an elongated slot, a bolt having a T-head adapted to engage thekeeper-plate and also having a gear at an intermediate point of itslength and a projection, and an eccentric cam-gear arranged between andadapted to engage the gear and projection of the bolt and having teethadapted to engage the teeth of said gear of the bolt; said cam-gearbeing adapted to be turned, substantially as and for the purpose setforth.

4C. In the shutter-lock described the combination of a window-casinghaving a passage formed in it and a recess at the innerend of saidpassage,a guide-bearing closing the outer end of said passage, a guide11, also arranged in the passage, the locking-bolt having the T- head atits outer end and the body portion arranged in the passage and recess inthe window-casing and provided at an intermediate point of its lengthwith the angular portion engaging the guide 1', and also provided withthe gear and the projection, the eccentric camgear arranged between andadapted to engage the gear and projection of the bolt and havin g a stemj ournaled in a suitable bearing and provided with a finger-piece, and ashutter having a recess in its inner side and a plate covering saidrecess and provided with an elongated slot, substantially as and for thepurpose set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

FRANK KRUPP. Witnesses:

WM. F. KAISER, JOHN MULLER.

